I will Mark as brainless

Read the poem below, and identify the figurative language used. Then explain how this figurative language contributes to the tone, mood, and overall meaning of the poem.
Passage
Fame is a fickle food1
Upon a shifting plate
Whose table once a
Guest but not
The second time is set.

Whose crumbs the crows inspect
And with ironic caw
Flap past it to the Farmer's Corn —
Men eat of it and die.2

—Emily Dickinson, "1659"

1. Fickle means erratic or constantly changing.